Which of the following strategies is used to prevent technical unemployment?

The correct choice is aimed at employing a strategy that addresses the challenges posed by technological advancements in the workforce. Raising job qualifications is a way to minimize technical unemployment by ensuring that workers possess the necessary skills and training to meet the demands of a changing job market. As technology evolves, jobs can become more specialized, and employees who adapt by obtaining higher qualifications can remain competitive and retain their positions.

In contrast, simply providing severance packages does not address the root causes of technical unemployment and is more of a temporary solution for laid-off workers. Introducing automation, while often intended to increase efficiency, may exacerbate technical unemployment by replacing human workers with machines rather than preparing them for future roles. Decreasing the number of job vacancies can lead to a more competitive environment but does not inherently improve the skill level of the workforce or provide solutions to adapting to new technologies. Thus, focusing on raising job qualifications directly helps workers transition into new roles that require enhanced skills.